88 NEUROPTERA. 
23. Argia chelata, sp.n. (Tab. IV. figg. 47, 47s.) 
3. Rear of head pale above, black below. Pale antehumeral stripe equal in width to the black mid-dorsal. 
Humeral stripe forked in its upper half, lower half one-third as wide as the pale antehumeral. Segment 2 
pale (violet ?), each side with two black anteapical spots, one superior, one inferior ; 3-7 pale (blue ?), 
each side with an inferior black stripe beginning shortly behind the base and reaching to apex, before 
which it is widened (in the apical eighth) and extends upward toward the mid-dorsal line, but meets its 
fellow of the opposite side only on 6 and 7; 8 and 9 blue (?), each side with an inferior black stripe as 
long as the segments. 
Pterostigma of the front wings 1 mm. long, of the hind wings 1°18 mm. long, surmounting more than one cell 
on all, 
Antenodal cells on the front wings 5, on the hind wings 4. 
Dimensions.—Abdomen 37, hind wing 30 mm. 
© unknown. 
Hab. Costa Rica, Volcan de Irazu 6000-7000 feet (Rogers: 1 3, with label 
“ acrymans, 2,” in de Selys’s handwriting, coll. McLachlan). 
This species is very similar to A. dacrymans, but differs in having the inner branch 
of the superior appendages longer and more acutely pointed, the humeral stripe forked, 
an inferior black stripe on the sides of 3-10. 
A few double cells exist in the middle of the area between the inferior sector of the 
triangle and the hind margin of the front wings, a condition suggesting that developed 
to a greater degree in the genus Hyponeura. ‘Lhe specific name proposed has reference 
to the form of the superior appendages, see fig. 47 s. 
24. Argia lacrymans. (Tab. IV. figg. 16, 49, 49s.) 
Agrion lacrymans, Hagen, Syn. Neur. N. Am. p. 95 (1861) *. 
Argia lacrymans, Selys, Bull. Acad. Belg. (2) xx. p. 386 (1865) ”. 
3. Rear of the head pale. Pale (blue) antehumeral stripe from one-half to two-thirds as wide as the black 
mid-dorsal stripe. Humeral stripe not forked, at its middle one-third to one-fourth as wide as the pale 
antehumeral, narrower above. Segment 2 blue, each side with a superior, longitudinal, black stripe, 
widened at the hind end, which does not reach the apex of the segment ; 3-6 blue, each side with a black 
spot on the apical fourth to third, united on the dorsum with its fellow of the opposite side on 4- or 5-6, 
and with a black transverse ring at the articulations 3/4 and 4/5; 7 with a transverse basal ring and 
the dorsal basal two-thirds blue, apical dorsal one-third and the greater part of the sides black, confluent ; 
8 and 9 blue, unmarked, or occasionally with a trace of an inferior, lateral, apical black spot. 
?. Differs from the male as follows :—Luteous replacing the blue of the male in Hagen’s types, but not in the 
other females. Pale antehumeral stripe in some specimens equal in width to the black mid-dorsal. 
Segments 3-6 similar to those of the male, but with a lateral black stripe reaching forward from the 
apical spot nearly to base, the apical spots of the two sides united on the dorsum; 8 and 9 blue, each 
side with a superior stripe or spot in the basal half, and on 8 a small inferior apical black spot. 
3 Q. Pterostigma of the front wings, 1 ¢, 1:3 mm. @ long, surmounting more than one cell (100 °/, 3 2); 
of the hind wings, 1:25 ¢, 14mm. long, surmounting more than one cell (100 °/, ¢ ©). 
Antenodals on the front wings 5 (81 °/, ¢, 93 °/, 9), 6 (18 °%/, 3), 44+ (6 °lo 3), or 4 (7 9/, @); on the 
_ hind wings 4 (81 °/, d, 64 °/, 2), 5 (13 °/, 3, 36 9/, 2), or 44 (6 ln 3d). 
Dimensions.— Abdomen, ¢ 33-37, 2 31°5; hind wing, ¢ 26-28, 9 27 mm. 
Hab. Mexico! (M. C. Z.: 2 2, types of Hagen), Pinos Altos in Chihuahua (Buchan- 
Hepburn, coll. McLachlan: 1 2), Cuernavaca (Barrett, colls. Adams, P. P. C.: 16, 
